[The Papillon-Lefèvre syndrome. A clinical and ultrastructural study of 2 cases].

Two cases of Papillon-Lefèvre syndrome, a rare hereditary affection of unknown etiology, whose clinical signs are hyperkeratosis palmoplantaris and parodontitis, are described. The results obtained with the ultrastructural examination of the lesions are shown. A therapeutic protocol which can reduce the evolution of the pathology, is also suggested.